Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 292 for “"Charge Transport"”.
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Charge control in acoustic charge transport devices
Acoustic charge transport (ACT) devices utilize the acoustoelectric effect in a piezoelectric semiconductor, particularly GaAs, to create buried channel charge transfer devices capable of signal processing functions, especially transversal filtering. Charge control in ACT devices concerns the …
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Charge Transport Physics in Coordination Nanosheets (CONASHs)
… conductivity. This study delves into the unique charge transport characteristics of CONASHs. The investigation focuses on two exemplary coordination nanosheets, copper-benzenehexathiol (Cu-BHT) and nickel-based benzenehexathiol (Ni-BHT), presenting a detailed exploration of their charge transport …
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Charge transport in printed silicon nanoparticle networks
For the first time, the charge transport mechanisms in printed silicon nanoparticle networks have been comprehensively studied using variable temperature IV characteristics and Hall effect measurements, supported by microscopy studies. The conductivity can be described as hopping percolation in …
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Perylene Diimide Molecular Glass: Investigations of Charge Transport
… material was synthesized using a known electron transport material, perylene diimide, and attaching it to a molecular glass in order to allow the material to be solution processed. Devices were made using a simple metal-semiconductor-metal structure and electrodes were selected to produce …
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Acoustoelectric charge transport in quasi-one-dimensional systems
The study of electron transport in mesoscopic systems has recently turned to the observation of time dependent single electron e ects, where the electron transport is frequency locked to an external potential. Such devices are expected to form the basis of a standard of electric current, long …
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Thermoelectric and Charge Transport in Doped Semi-Crystalline Polymers
… To achieve this, it is paramount to understand charge and entropy transport as well as the related key parameters affecting the electrical and thermoelectric properties in doped OSCs. Herein, doped poly(2,5-bis(3-tetradecylthiophen2-yl)thieno-[3,2-b]thiophene), PBTTT and its derivates are …
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Enhancing Fluorescence and Charge Transport in Disordered Organic Semiconductors
… to a different temperature evolution of the transport behaviour. In order to reliably improve $\mu$ in these systems, an elongation of the donor subunit is required. This increases the $\pi$-electron density on the donor, and can lead to an improvement in $\mu$ where the side chain density is …
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Charge transport in nanopatterned PbS colloidal quantum dot arrays
In this thesis, we study charge transport in nanopatterned arrays of PbS colloidal quantum dots using conventional two-probe measurements and an integrated charge sensor. PbS dots are synthesized in solution with an organic ligand or cap that serves to passivate the surface of the dot, provide a …
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CHARGE TRANSPORT IN ORGANIC AND HYBRID PEROVSKITE FIELD EFFECT TRANSISTORS
… layers generates trapping states and localize charge carriers, leading to a surprising universal scaling between the activation energy of the devices and the interfacial thermal expansion mismatch coefficient.
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Light Emission and Charge Transport in Reverse Biased Polymer Junctions
… of electroluminescence (EL) and electrical transport properties of frozen-junction polymer LECs (PLECs) made from a conjugated polymer emitter and a solid polymer electrolyte. Chapter 1 covers the basics and background of LECs, including the materials, operating mechanism and relevant …
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Investigation of charge-transport models for organic light-emitting devices
… of these organics are not well understood, like charge transport, charge injection and exciton formation/relaxation. It is therefore useful to attempt to understand the behavior of these materials in the physical state that they will be used in: thin films. There have been two models proposed to …
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Nanoscale Study of Perovskite Solar Cells for Efficient Charge Transport
… and water on the grain boundary potential and charge transport within the grains of pervoskite films prepared by sequential deposition technique. Grain boundary potential of perovskite films exhibited variation in electrical properties with humidity level, temperature and water concentration in …
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Luminescent Probes of Charge Transport in Modifying Layers on Electrodes
… this project are aimed at the investigation of charge transport among redox centers bound in polymer films on electrodes. Luminescent probes were used as an indicator of the charge transport process for the system of interest. The signals were then detected by spectroscopic methods. The …
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First principles Monte Carlo simulation of charge transport in semiconductors
A new multiscale method is presented for modeling charge transport across a semi-conductor heterointerface. It has the advantage of increase predictive power due to its treatment of the detailed mixing between Bloch and Tamm electronic states in the interface region; this is of critical importance …
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Tunable viscoelasticity, morphology, and charge transport of dynamic covalent polymers
… polymer electrolytes with tunable mechanical and transport properties, offering a safer and more stable alternative to conventional liquid electrolytes. Compared to crosslinked systems, the role of dynamic covalent bond exchange in rigid, linear conjugated polymers remains relatively …
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Mechanisms of diffusive charge transport in redox active polymer solutions
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01
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